The HFN 'Hexagonal speaker' article on here
E.J.Jordan Designs - book & articles design & consultancy
Gives Ted Jordan's argument in favour of the cone tweeter when developing the original 50mm Module. He states that a stiff cone is exactly what is not required if you want to do something better than the tradition dome tweeter.
E.J.Jordan Designs - book & articles design & consultancy
Gives Ted Jordan's argument in favour of the cone tweeter when developing the original 50mm Module. He states that a stiff cone is exactly what is not required if you want to do something better than the tradition dome tweeter.
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I only see about 1.1T in the gap (figure 6 on page 4). That ties in with my own experience playing with FEMM - it's a struggle to get more than about 1T with any practical geometry.
OTOH, I have seen a driver claiming 2T in the gap. I'd love to know how they achieved that (if it's true).
Deserves a "could try harder" on his report card.😛
I didn't know enough to argue with him or his implementation, but the very poor result told me enough that he did not know what he was doing with the software, nor how to manufacture the driver.
I like cone tweeters a great deal. On theoretical grounds, at high frequency, say above 7kHz, soft domes leave the centre resonance undefined. Hence they sound spitty and harsh. Whatever HF output they have is certainly not music to my ears. 😡
Cone tweeters perhaps work much better, giving ring radiators (which pin the centre) a run for their money.
TW 70 - 8 Ohm
This cheapie Monacor HT22/8 has a metal centre dome so plays nicely at HF:
HT-22/8
The classic peerless polycone tweeter may be reproduced by the Monacor SPP-90 here: SPP-90
I would like to try that one. It will control the usual 14kHz resonance better, by way of better damping and hence reduced radiating area. 😎
BTW, third order 3.5kHz filters work best with cone tweeters IMO. Forget the usual first order single cap approach.
Cone tweeters perhaps work much better, giving ring radiators (which pin the centre) a run for their money.
An externally hosted image should be here but it was not working when we last tested it.
TW 70 - 8 Ohm
This cheapie Monacor HT22/8 has a metal centre dome so plays nicely at HF:
HT-22/8
The classic peerless polycone tweeter may be reproduced by the Monacor SPP-90 here: SPP-90
I would like to try that one. It will control the usual 14kHz resonance better, by way of better damping and hence reduced radiating area. 😎
BTW, third order 3.5kHz filters work best with cone tweeters IMO. Forget the usual first order single cap approach.
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